CN214600393U

CN214600393U - Aluminum oxide circulating pipe control system

Info

Publication number: CN214600393U
Application number: CN202120411769.8U
Authority: CN
Inventors: 王明; 张连千; 徐硕; 白景启
Original assignee: Beijing Tiankai Huazun Science & Technology Co ltd
Current assignee: Beijing Tiankai Huazun Science & Technology Co ltd
Priority date: 2021-02-24
Filing date: 2021-02-24
Publication date: 2021-11-05
Anticipated expiration: 2031-02-24

Abstract

The utility model discloses an alumina circulating pipe control system, which comprises a stock bin I, a stock bin II, a dust remover, a material pipe and a pipeline; feed bin I is through expecting the pipe and is connected with the pipe connection, and the end and the dust remover of pipeline are connected, still include feed divider controlling means and full-automatic hardened material remove device, and feed divider controlling means sets up on the material pipe between feed bin I and pipeline, and full-automatic hardened material remove device's entry and the exit linkage of dust remover, the device's row hopper II is through expecting the pipe and is connected with the pipe connection, and row hopper I is through expecting the pipe and II are connected with feed bin, the utility model discloses an alumina circulating tubular system removes dust and removes miscellaneous efficiently, and the feed is stable, and the management and control is convenient, practices thrift the cost.

Description

Aluminum oxide circulating pipe control system

Technical Field

The utility model belongs to the technical field of the aluminium oxide is handled, concretely relates to aluminium oxide circulating pipe accuse system.

Background

In the aluminum electrolysis purification process flow, the circulating alumina is always the most direct process means for controlling the stability of environmental protection data, and according to the national environmental protection requirements, aluminum electrolysis enterprises in China gradually optimize the alumina circulation treatment process flow, including improving the adsorption effect of fluoride and sulfide in flue gas, improving the purification efficiency, reducing emission, reducing the consumption of fluoride salt and achieving the purposes of cost reduction and efficiency improvement.

The utility model discloses a utility model patent that grant bulletin number is CN208844206U discloses a dry process aluminium electroloysis flue gas adsorption purification integrated device, by the imported motorised valve, total intake stack, fresh alumina charge-in system, the injection type reactor, circulation alumina feed system, the fluidization case, the overflow feed opening, the air inlet subassembly that flow equalizes, filter chamber filter bag unit, the pulse deashing system, the air-purifying chamber, the export motorised valve, the air-out header pipe, upper portion overhauls the platform, the lower part hopper, return alumina system, venturi reaction tube, the lower part is overhauld the platform, bracket component and water conservancy diversion return bend are constituteed. Aluminum electrolysis flue gas containing fluoride and dust is converged to an air inlet main pipeline through an electrolysis workshop collecting pipeline and enters a jet reactor through an inlet electric valve, a fresh alumina feeding system from an alumina storage bin flows into the jet reactor, the aluminum electrolysis flue gas flows into the jet reactor together after being quantified through a circulating alumina feeding system, the fluoride in the electrolysis flue gas reacts with alumina in the reactor, the alumina adsorbs the fluoride to be fluorine-carrying alumina, the adsorption reaction can continue to be carried out in a Venturi reaction pipeline due to the change of the flow velocity of the flue gas, the adsorption reaction of the fluoride is carried out again due to the change of the flow state of the flue gas when the flue gas flows into an air inlet flow equalizing assembly, meanwhile, most dust particles flow into a lower hopper, the secondary adsorption and dust filtration are completed in the dust filtration process, and the whole process of adsorption and purification of the flue gas is completed.

In the prior art, in the operation process, a certain amount of alumina powder is mixed with flue gas in the dust removal adsorption reaction, fluoride in the flue gas is absorbed after the adsorption reaction, and the adsorption reaction efficiency is influenced due to more impurities of the alumina conveyed into a dust remover, so that the dust removal effect is influenced; how to accomplish the balanced and stable material distribution and keep the content of alumina entering the dust remover stable so as to keep the best reaction efficiency of dust removal, which is the weight of each feeding system; in the aluminum oxide circulation process, the phenomenon of hardening is easy to occur under the influence of factors such as temperature change of a device shell, air supply and water content of a conveying device and the like, the conveying of materials is greatly influenced, and the blocking phenomenon is easy to cause.

Disclosure of Invention

In order to solve the problems in the prior art, the utility model provides an alumina circulation pipe control system, which comprises a stock bin I, a stock bin II, a dust remover, a chimney, a material pipe and a pipeline; the bin I is connected with the pipeline through a material pipe, the tail end of the pipeline is connected with the dust remover, and the dust remover is connected with the chimney through the material pipe; the system further comprises a distribution control device and a full-automatic hardened material removing device, wherein the distribution control device is arranged on the material pipe between the storage bin I and the pipeline, an inlet of the full-automatic hardened material removing device is connected with an outlet of the dust remover, a discharging hopper II of the full-automatic hardened material removing device is connected with the pipeline through the material pipe, and a discharging hopper I of the full-automatic hardened material removing device is connected with the storage bin II through the material pipe.

The material distribution control device can adjust and control the discharge amount of the alumina after sand removal, and the full-automatic plate material removing device can adjust and control the discharge amount of the alumina after dust removal, so that the proportion of two types of alumina entering a pipeline reaches the best, the dust removal efficiency of the dust remover is guaranteed to be the highest, the material supply is stable, and the manual participation is reduced. The full-automatic plate material removing device can remove plate materials in aluminum oxide, reduce the content of broken material slag, reduce the phenomenon of plate materials and achieve the best screening effect. The side of the dust remover is provided with a tuning fork for detecting the material level of the dust remover and preventing the material from being accumulated excessively to cause danger, and the material pipe is provided with a microwave switch for monitoring the dynamic state of the material and giving an alarm in time when no material or material blockage exists.

Preferably, the material distribution control device comprises a material distribution box and a metering box, and the material distribution box is communicated with the metering box. The metering box can be used for metering the flow of the material, so that the subsequent control of the flow of the material is facilitated; the bottom of the material distribution box is paved with a desanding pressing cloth which can remove part of impurities in the alumina, an air chamber is arranged below the desanding pressing cloth, and the bottom of the air chamber is provided with a ventilation pipe, so that the alumina keeps a certain gas-solid ratio in the conveying process, and the material is ensured to form a state similar to water flow in the material feeding box; the upper part of the material separating box is provided with a quick opening and a dust collecting cover, and the side surface of the material separating box is provided with an observation window.

In any scheme, preferably, a semicircular through hole I is formed in the position where the material distribution box is communicated with the metering box; the through hole I is movably connected with a semicircular material distribution baffle I matched with the through hole I. Divide material baffle I and the coincidence of the centre of a circle of through-hole I, semicircular divide the radius size of material baffle I to be greater than I radius size of semicircular through-hole to it is rotatory around the centre of a circle. Through such setting, make branch material baffle I and I formation of through-hole adjust the arc mouth, avoided debris and small-size hardened and hardened material pile, make three kinds of power combinations of stress, row's mouth negative pressure that positive pressure wind, material level height produced, guarantee to control the supply of material in a balanced way.

In any of the above schemes, preferably, the material distributing baffle I is connected with the motor through a rotating shaft; and a wind shield is arranged above the rotating shaft. The wind shield can avoid wind power to influence the interior of the metering box.

In any of the above schemes, preferably, a material guide hopper is arranged below the rotating shaft, an arc-shaped material distributing punch plate is arranged below the material guide hopper, the material distributing punch plate is connected with the sensor, and a material distributing ridge is arranged below the material distributing punch plate. The air-material separation channel is formed through the arrangement, interference caused by external factors such as positive pressure air, negative pressure air and the like is avoided, and the metering precision is improved.

In any of the above schemes, preferably, the full-automatic plate material removing device includes a screen box and a drum screen, the drum screen is arranged in the screen box, the drum screen is connected with a motor, and an adjusting plate i and an adjusting plate ii are arranged in the screen box. The aluminum oxide after dust removal is screened through the drum screen, plate caking materials in the aluminum oxide can be continuously removed, system operation is not influenced, and manpower and material resources are saved. The bottom of the sieve box is paved with desanding pressing cloth, the desanding pressing cloth and the bottom of the sieve box form an air chamber, the side surface of the sieve box is provided with a ventilation pipe and communicated with the air chamber, and the feed inlet of the sieve box is provided with the air chamber; the side surface of the screen box is provided with a ridge along the vertical direction, and the ridge is provided with a quick opening hole. Adjusting plate I sets up in the top of sand removal compress to correspond with the fast trompil, I upper end of adjusting plate is equipped with V type opening.

In any of the above schemes, preferably, the adjusting plate ii is provided with a semicircular through hole ii, and the through hole ii is movably connected with a semicircular material distributing baffle plate ii matched with the through hole ii. The adjusting plate II is arranged above the desanding and pressing cloth, the semicircular distribution baffle II is concentric with the semicircular through hole II, the radius size of the distribution baffle II is larger than that of the semicircular through hole II, the distribution baffle II and the through hole II form an adjusting arc-shaped opening through the arrangement, accumulation of sundries and small-sized hardened materials is avoided, stress generated by positive pressure air and material level height and three forces of discharge opening negative pressure are combined, and supply of materials can be controlled in a balanced mode is guaranteed.

In any one of the above schemes, preferably, the discharge hopper I is arranged below the adjusting plate I, the discharge hopper II is arranged below the adjusting plate II, the discharge hopper III is arranged below the outlet of the rolling cage, and a partition plate is arranged above the discharge hopper III.

In any of the above schemes, preferably, one end of the main shaft of the drum screen, which is close to the feed inlet of the screen box, is provided with a helical blade I, the other end of the main shaft is sleeved with a rolling cage, the inner side wall of the rolling cage is provided with a sector plate and a helical blade II, and the tail end of the main shaft is provided with a vibration hammer. Helical blade I can stably convey alumina, carries out effectual smashing to the knot material, shakes the hammer and can shake the bits of broken glass with remaining the hardened material that rolls in the cage, rolls the cage and sieves the material in the alumina, screens out impurity and carries and discharge in row material fill III to carry to the assigned position.

In any scheme, preferably, an overflow type desanding device is arranged on a material pipe between the bin I and the material distribution control device, and comprises a feeding box, a desanding cloth pressing and an air chamber; the feeding box is communicated with a feeding hole of the sand removing box, the air chamber is arranged at the bottoms of the feeding box and the sand removing box, the sand removing cloth is laid above the air chamber, the sand removing box comprises a box body I and a box body II, a stirring device I and an overflow device I are arranged in the box body I, and a stirring device II and an overflow device II are arranged in the box body II; the overflow device I comprises a partition plate I, an overflow groove I and a sintering plate I, the overflow groove I is connected with the partition plate I, and the sintering plate I is inserted into the overflow groove I; the overflow device II comprises a partition plate II, an overflow groove II and a sintering plate II, the overflow groove II is connected with the partition plate II, and the sintering plate II is inserted into the overflow groove II. The overflow sand removing device can perform two-stage overflow sand removing processes, and each stage of overflow sand removing process can perform sand removal and filtration respectively. Each stage of filtration is to further remove sand from the impurities remaining after sand removal. In each stage of the sand removing process, the precipitated impurities are stirred into a discharge hole through a corresponding stirring device and are discharged; the filtering process of each stage is to filter the alumina powder flowing through the overflow device through the corresponding overflow device, so that the residual impurities after sand removal are filtered thoroughly.

In any scheme, preferably, an air chamber I is arranged below the overflow groove I, and a sand-removing pressing cloth I is paved above the air chamber I; an air chamber II is arranged below the overflow groove II, and a sand removing press cloth II is paved above the air chamber II.

In any scheme, the stirring device I preferably comprises a motor I, a rotating shaft I and a stirrer I, wherein the motor I is fixedly installed at the top of the box body I, and the stirrer I is arranged in the box body I and is connected with the motor I through the rotating shaft I; a baffle I is fixedly installed on the rotating shaft I, and the baffle I and the partition plate I are parallel to each other. First order stirring, through fixing the agitator in the box in time stir and discharge the impurity in the box, the process that the guarantee degritting process can be smooth goes on, prevents to pile up and arouse the putty phenomenon at the degritting in-process impurity. The baffle with the impurity in the alumina powder can be obstructed to the baffle, and impurity just can subside gradually like this, reaches the effect of apparent degritting edulcoration. The motor sets up the top of box reduces the inner space of box, makes the device small, can be applicable to multiple occasion in a flexible way.

In any scheme, the stirrer I comprises a circular ring I, a connecting rod I and a blade I, wherein the blade I is connected with the circular ring I through the connecting rod I; and a discharge hole I is arranged below the stirrer I.

In any scheme, the stirring device II comprises a motor II, a rotating shaft II and a stirrer II, wherein the motor II is fixedly arranged at the top of the box body II, and the stirrer II is arranged in the box body II and is connected with the motor II through the rotating shaft II; and a baffle II is fixedly installed on the rotating shaft II, and the baffle II is parallel to the partition plate II. The second grade stirring is through fixing the agitator in the box in time stirring and discharge the impurity in the box, and the going on that the guarantee degritting process can be smooth prevents to pile up and arouse the putty phenomenon at the desanding in-process impurity. The baffle with the impurity in the alumina powder can be obstructed to the baffle, and impurity just can subside gradually like this, reaches the effect of apparent degritting edulcoration. The motor sets up the top of box reduces the inner space of box, makes the device small, can be applicable to multiple occasion in a flexible way.

In any scheme, the stirrer II comprises a circular ring II, a connecting rod II and a blade II, and the blade II is connected with the circular ring II through the connecting rod II; and a discharge hole II is arranged below the stirrer II.

In any of the above solutions, it is preferable that the level of the overflow means i is higher than that of the overflow means ii. Through the setting of overflow arrangement's a high one low, increase the mobility of alumina powder, make the degritting effect better, the impurity is got rid of more thoroughly, practices thrift the cost, raises the efficiency.

In any of the above schemes, preferably, a quick opening is arranged above the feeding box; and a feeding pipe is arranged above the sand removing box.

In any of the above schemes, preferably, two feeding baffles are arranged at the feeding port of the sand removing box; and two sides of the bottom of the sand removing box are respectively provided with a ventilation rectangular pipe.

The sand removing method of the overflow sand removing device comprises the following steps in sequence:

the method comprises the following steps: alumina powder is conveyed into a feeding box by wind power, an air chamber at the bottom of the feeding box makes the alumina powder flow into a desanding box by blowing, and the alumina powder removes a part of impurities through desanding pressing cloth at the bottom of the feeding box;

step two: the alumina powder enters a box body I of the desanding box to be subjected to primary overflow desanding, the alumina powder flows through an overflow device I to be filtered to remove a part of impurities, and the filtered alumina powder flows into a box body II; the partition plate I blocks impurities in the alumina powder in the box body I, and the impurities are gradually precipitated on the sand removing press cloth at the bottom of the box body I; the stirring device I is used for stirring impurities at the bottom of the box body I, and the impurities are finally discharged from the discharge hole I;

step three: the alumina powder enters a box body II of the desanding box to carry out secondary overflow desanding, the alumina powder flows through an overflow device II to filter out part of impurities, and the filtered alumina powder is discharged from a discharge hole of the desanding box; the partition plate II blocks impurities in the alumina powder in the box body II, and the impurities are gradually precipitated on the sand removing press cloth at the bottom of the box body II; and the stirring device II is used for stirring the impurities at the bottom of the box body II, and the impurities are finally discharged from the discharge hole II.

The overflow type desanding device and the desanding method thereof are simple to operate, labor and material resources are saved, and the working efficiency is improved. The utility model discloses a mode of the cascaded overflow degritting of two-stage, the degritting is thorough, and the degritting rate reaches more than 95%, and prior art directly adopts the traditional mode of sediment filtration, and the degritting is not thorough, and the degritting rate is lower.

The utility model discloses an alumina circulation tubular system, the transport material of each link is stable, and the management and control is efficient, control alumina circulation transport proportion size that can be balanced, and dust removal purification effect is high, practices thrift the cost, makes exhaust plate material contain alumina and is less than 5%, reaches best dust removal purification effect.

The utility model also provides an aluminium oxide circulating pipe accuse method, adopted any kind of above-mentioned management and control system in this circulating pipe accuse method, included following step according to the order:

the method comprises the following steps: putting fresh alumina into a bin I, and enabling the alumina in the bin I to enter an overflow type desanding device for desanding;

step two: the degritted alumina enters a material distribution control device for material distribution, and the separated alumina enters a dust remover through a pipeline for dust removal;

step three: the dedusted alumina enters a full-automatic plate material removing device for screening, a part of the screened alumina is discharged through a discharge hopper I and flows into a storage bin II through a material pipe, and the rest part of the alumina is discharged through a discharge hopper II and flows into a pipeline through a material pipe;

step four: mixing the alumina flowing into the pipeline and the alumina flowing out of the material separating and controlling device in the pipeline, and enabling the mixed alumina to enter a dust remover for dust removal;

step five: the aluminium oxide after the dust removal gets into full-automatic hardened material remove device once more and sieves, and a part of aluminium oxide after the screening is discharged through arranging hopper I to flow into feed bin II through the material pipe, the aluminium oxide of remainder discharges through arranging hopper II, and flows into the pipeline through the material pipe, so on and so on, accomplishes the circulation management and control of aluminium oxide.

The utility model discloses an aluminium oxide circulating pipe accuse method can carry out effectual management and control to the aluminium oxide mixing ratio that gets into in the dust remover, makes the reaction efficiency of aluminium oxide reach the highest in the dust remover, and the reaction is abundant, and dust removal effect is best, practices thrift the cost, and the management and control is efficient, and the stability of material transport is good, is applicable to large-traffic system, satisfies the industrial demand.

Drawings

FIG. 1 is a schematic structural view of a preferred embodiment of an alumina circulation tube control system according to the present invention;

FIG. 2 is a schematic view of the feed control device of the embodiment of FIG. 1 of an alumina circulation tube control system according to the present invention;

FIG. 3 is a top view of the material distribution control device of FIG. 2 of the alumina circulation tube control system in accordance with the present invention;

FIG. 4 is a cross-sectional view of the feed control device of FIG. 3 along the A-A direction of an alumina circulation tube system in accordance with the present invention;

FIG. 5 is a partial cross-sectional view of the material distribution control device of FIG. 3 of an alumina circulation tube control system in accordance with the present invention;

FIG. 6 is a schematic structural diagram of the full-automatic plate material removing device in the embodiment of FIG. 1 of the alumina circulation tube system according to the present invention;

FIG. 7 is a partial cross-sectional view of the full automatic panel stock removal apparatus of FIG. 6 of an alumina circulation tube control system in accordance with the present invention;

FIG. 8 is a schematic view of the overflow type desanding device of the embodiment of FIG. 1 of the alumina circulation piping system according to the present invention;

FIG. 9 is a cross-sectional view of the overflow desanding device of FIG. 8 of an alumina circulation tube system in accordance with the present invention;

FIG. 10 is a partial enlarged view of an overflow device I in the overflow type desanding device shown in FIG. 9 of the alumina circulation tube control system according to the present invention;

FIG. 11 is a partial enlarged view of an overflow device II of the overflow desanding device shown in FIG. 9 of the alumina circulation tube system according to the present invention;

FIG. 12 is a schematic structural view of a stirrer I in the overflow type desanding device shown in FIG. 9 of the alumina circulation tube control system according to the present invention.

The figures are labeled as follows:

1-a stock bin I; 2-a storage bin II; 3-a dust remover; 4-a pipeline;

5-material distribution control device, 51-material distribution box, 52-metering box, 53-through hole I, 54-material distribution baffle I, 55-material distribution punching plate;

6-full-automatic hardened material removing device, 61-screen box, 62-rotary screen, 63-adjusting plate I, 64-adjusting plate II, 65-through hole II, 66-material separating baffle II, 67-material discharging hopper I, 68-material discharging hopper II, 69-helical blade I, 610-rolling cage, 611-sector plate, 612-helical blade II, 613-material discharging hopper III and 614-vibration hammer;

7-overflow type desanding device, 71-feeding box, 72-desanding box, 73-box I, 74-box II, 75-stirring device I, 76-overflow device I, 77-stirring device II, 78-overflow device II, 79-clapboard I, 710-overflow groove I, 711-sintering plate I, 712-clapboard II, 713-overflow groove II, 714-sintering plate II, 715-motor I, 716-rotating shaft I, 717-stirrer I, 718-baffle I, 719-ring I, 720-connecting rod I, 721-paddle I, 722-ventilation rectangular pipe, 723-discharge hole I, 724-discharge hole II and 725-baffle II;

8-an electrolytic cell; 9-chimney.

Detailed Description

In order to further understand the present invention, the following detailed description will be given with reference to the specific embodiments.

As shown in fig. 1-12, according to a preferred embodiment of the alumina circulation tube control system of the present invention, the system comprises a storage bin i 1, a storage bin ii 2, a dust collector 3, a chimney 9, a material tube and a pipeline 4; the storage bin I1 is connected with the pipeline 4 through a material pipe, the tail end of the pipeline 4 is connected with the dust remover 3, and the dust remover 3 is connected with the chimney 9 through the material pipe; the system further comprises a material distribution control device 5 and a full-automatic hardened material removing device 6, wherein the material distribution control device 5 is arranged on the material bin I1 and the material pipe between the pipelines 4, a material inlet of the full-automatic hardened material removing device 6 is connected with a material outlet of the dust remover 3, a material discharging hopper II 68 of the full-automatic hardened material removing device 6 is connected with the pipelines 4 through a material pipe, a material discharging hopper I67 of the full-automatic hardened material removing device 6 is connected with the material bin II 2 through a material pipe, and an outlet of the material bin II 2 is connected with the electrolytic cell 8 through a material pipe.

The material distribution control device can adjust and control the discharge amount of the alumina after sand removal, and the full-automatic plate material removing device can adjust and control the discharge amount of the alumina after dust removal, so that the proportion of two types of alumina entering a pipeline is stable, the alumina content entering a dust remover can be kept stable, the reaction rate of dust removal is highest, the reaction is more sufficient, the system supplies are stable, and manual participation is reduced. The full-automatic hardened material removing device can screen and remove hardened materials in the alumina, reduce the slag content in the materials, reduce the hardening phenomenon of the materials and save the material cost; preferably, the dust remover can be provided with a plurality of dust removers, each dust remover corresponds to a material distribution control device, a pipeline and a full-automatic plate material removing device, and the arrangement of the plurality of dust removers can improve the treatment capacity of the alumina and meet a large number of industrial requirements.

The side of the dust remover 3 is provided with a tuning fork for detecting the material level of the dust remover 3, preventing danger caused by excessive accumulation of materials, and the material pipe is also provided with a microwave switch for detecting the dynamic state of the materials and giving an alarm in time when no materials or material blockage exists.

The material distribution control device 5 comprises a material distribution box 51 and a metering box 52, wherein the material distribution box 51 is communicated with the metering box 52. The metering box 52 can be used for metering the flow of the material, so that the subsequent control of the flow of the material is facilitated; the bottom of the material distribution box 51 is paved with desanding pressing cloth which can remove part of impurities in the alumina, an air chamber is arranged below the desanding pressing cloth, and the bottom of the air chamber is provided with a ventilation pipe, so that the alumina keeps a certain air-solid ratio through air supply of the air chamber in the conveying process, and the material is ensured to form a state similar to water flow in the material inlet box 71; a quick opening and a dust collection cover are arranged above the material distribution box 51, and an observation window is arranged on the side surface of the material distribution box 51.

A semicircular through hole I53 is formed in the position where the material distribution box 51 is communicated with the metering box 52; the through hole I53 is movably connected with a semicircular material distributing baffle I54 matched with the through hole I53. The center of a circle of the material separating baffle I54 is overlapped with that of the through hole I53, the radius size of the semicircular material separating baffle I54 is larger than that of the semicircular through hole I53, and the material separating baffle I54 can rotate around the center of the circle. Through such setting, make branch material baffle I54 and I53 of through-hole form and adjust the arc mouth, through the size of adjustment arc mouth, the flow size of the alumina material that can stable control enters into batch meter 52, has avoided debris and small-size hardened material pile, makes three kinds of power combinations of stress, row's mouth negative pressure that positive pressure wind, material level height produced, guarantees the flow size of the balanced accurate control material of ability, and is preferred, and the both sides of through-hole I53 all are equipped with branch material baffle I54. The material distribution baffle I54 is connected with a motor through a rotating shaft, and the motor can drive the rotating shaft to rotate through rotation, so that the material distribution baffle I54 is driven to rotate; the wind shield is arranged above the rotating shaft and is V-shaped and buckled upside down above the rotating shaft, so that the influence of wind power on the inside of the metering box 52 can be avoided, and a handle is fixed on the wind shield.

A material guide hopper is arranged below the rotating shaft, an arc-shaped material distributing punching plate 55 is arranged below the material guide hopper, the material distributing punching plate 55 is connected with a sensor, and material distributing ridges are arranged below the material distributing punching plate 55. Through the arrangement, an air-material separation channel is formed in the metering box 52, interference caused by external factors such as positive pressure air, negative pressure air and the like is avoided, and the metering precision is improved.

The full-automatic plate material removing device 6 comprises a screen box 61 and a drum screen 62, wherein the drum screen 62 is arranged in the screen box 61, a main shaft of the drum screen 62 is connected with a motor, the motor is arranged on the outer side of the screen box 61, and an adjusting plate I63 and an adjusting plate II 64 are arranged in the screen box 61. The aluminum oxide after dust removal is screened by the drum screen, plate caking materials in the screened aluminum oxide can be removed, system operation is not affected, and manpower and material resources are saved. The bottom of the sieve box is paved with desanding pressing cloth, the desanding pressing cloth and the bottom of the sieve box form an air chamber, the side surface of the sieve box is provided with a vent pipe and is communicated with the air chamber, so that the air supply of the air chamber keeps a certain air-solid ratio in the conveying process of the alumina, and the material is ensured to form a state similar to water flow in the feeding box 71; an air chamber is arranged at the feed inlet of the screen box, so that the fluidity of the alumina material is more stable; the side surface of the screen box is provided with a ridge along the vertical direction, and the ridge is provided with a quick opening hole. Adjusting plate I is fixed to be set up in the top of sand removal compress to correspond with the fast trompil, I upper end of adjusting plate is equipped with V type opening.

The fixed top that sets up at the desanding compress cloth of adjusting plate II 64 to be equipped with semi-circular through-hole II 65, swing joint has II 66 rather than the semi-circular branch material baffle of matched with on II 65 of through-hole, semi-circular branch material baffle II 66 is concentric with semi-circular through-hole II 65, and the radius size of dividing II 66 of material baffle is greater than the radius size of semi-circular through-hole II 65, through such setting, make II 66 of branch material baffle and II 65 formation of through-hole adjust the arc mouth, through the size of adjustment arc mouth, the flow size of the alumina material that can stable control enter into in the relief hole II, debris and small-size hardened material pile have been avoided simultaneously, make the positive pressure wind, the high stress that produces of material level, three kinds of power in row mouth negative pressure combine, guarantee the flow size of the balanced accurate control alumina material.

The discharge hopper I67 is arranged below the adjusting plate I63 and communicated with the ridge bottom corresponding to the adjusting plate I63, the discharge hopper II 68 is arranged below the adjusting plate II 64 and communicated with the ridge bottom corresponding to the adjusting plate II 64, the discharge hopper III 613 is arranged below the outlet of the rolling cage 610, a partition plate is arranged above the discharge hopper III 613, and the partition plate corresponds to the outlet of the discharge hopper III 613 and has a certain inclination for guiding plate caking and impurities discharged from the rolling cage 610 into the discharge hopper III 613.

One end, close to a feed inlet of the screen box 61, of a main shaft of the drum screen 62 is provided with a spiral blade I69, the outer side of the spiral blade I69 is sleeved with a spiral shell, the other end of the spiral blade I69 is sleeved with a rolling cage 610, the inner side wall of the rolling cage 610 is provided with a sector plate 611 and a spiral blade II 612, the spiral blade II 612 is provided with a support rib, the tail end of the main shaft is provided with a vibration hammer 614, and preferably, the number of the vibration hammers 614 is two; helical blade I69 can convey the aluminium oxide that gets into in the feed inlet from sieve case 61 machine, also can carry out effectual smashing to the knot material simultaneously, helical blade I69 conveys the aluminium oxide and sieves in rolling cage 610, rolls cage 610 and sieves the aluminium oxide material, and the hammer 614 that shakes can shake the bits of broken glass of the cake material that remains in rolling cage 610, and the aluminium oxide foreign matter sieve is distinguished out and is discharged to row material fill III 613 in rolling cage 610 exit, is discharged by row material fill III 613 again, and carries to the assigned position.

An overflow type desanding device 7 is arranged on a material pipe between the stock bin I1 and the material distribution control device 5 and comprises a feeding box 71, a desanding box 72, desanding cloth pressing and an air chamber; the feeding box 71 is communicated with a feeding hole of the sand removing box 72, the air chambers are arranged at the bottoms of the feeding box 71 and the sand removing box 72, the sand removing cloth is laid above the air chambers, the sand removing box 72 comprises a box body I73 and a box body II 74, a stirring device I75 and an overflow device I are arranged in the box body I73, and a stirring device II 77 and an overflow device II 78 are arranged in the box body II 74; the overflow device I comprises a partition plate I79, an overflow groove I710 and a sintering plate I711, the overflow groove I710 is connected with the partition plate I79, and the sintering plate I711 is inserted into the overflow groove I710; the overflow device II 78 comprises a partition plate II 712, an overflow groove II 713 and a sintering plate II 714, wherein the overflow groove II 713 is connected with the partition plate II 712, and the sintering plate II 714 is inserted into the overflow groove II 713. The overflow type desanding device 7 can perform two-stage overflow desanding process, and each stage of overflow desanding process can perform desanding and filtering respectively. Each stage of filtration is to further remove sand from the impurities remaining after sand removal. In each stage of the sand removing process, the precipitated impurities are stirred into a discharge hole through a corresponding stirring device and are discharged; the filtering process of each stage is to filter the alumina powder flowing through the overflow device through the corresponding overflow device, so that the residual impurities after sand removal are filtered thoroughly.

An air chamber I is arranged below the overflow groove I710, and a sand removing press cloth I is laid above the air chamber I; an air chamber II is arranged below the overflow groove II 713, and a sand removing press cloth II is paved above the air chamber II.

The stirring device I75 comprises a motor I715, a rotating shaft I716 and a stirrer I717, wherein the motor I715 is fixedly installed at the top of the box I73, and the stirrer I717 is arranged in the box I73 and is connected with the motor I715 through the rotating shaft I716; a baffle I718 is fixedly mounted on the rotating shaft I716, and the baffle I718 is parallel to the partition plate I79. First order stirring, through fixing the agitator in the box in time stir and discharge the impurity in the box, the process that the guarantee degritting process can be smooth goes on, prevents to pile up and arouse the putty phenomenon at the degritting in-process impurity. The baffle with the impurity in the alumina powder can be obstructed to the baffle, and impurity just can subside gradually like this, reaches the effect of apparent degritting edulcoration. The motor sets up the top of box reduces the inner space of box, makes the device small, can be applicable to multiple occasion in a flexible way.

The stirrer I717 comprises a circular ring I719, a connecting rod I720 and blades I721, wherein the blades I721 are connected with the circular ring I719 through the connecting rod I720; and a discharge hole I723 is formed below the stirrer I717.

The stirring device II 77 comprises a motor II, a rotating shaft II and a stirrer II, the motor II is fixedly installed at the top of the box body II 74, and the stirrer II is arranged in the box body II 74 and is connected with the motor II through the rotating shaft II; and a baffle II 725 is fixedly arranged on the rotating shaft II, and the baffle II 725 is parallel to the partition plate II 712. The second grade stirring is through fixing the agitator in the box in time stirring and discharge the impurity in the box, and the going on that the guarantee degritting process can be smooth prevents to pile up and arouse the putty phenomenon at the desanding in-process impurity. The baffle with the impurity in the alumina powder can be obstructed to the baffle, and impurity just can subside gradually like this, reaches the effect of apparent degritting edulcoration. The motor sets up the top of box reduces the inner space of box, makes the device small, can be applicable to multiple occasion in a flexible way.

The stirrer II comprises a circular ring II, a connecting rod II and a blade II, and the blade II is connected with the circular ring II through the connecting rod II; and a discharge hole II 724 is arranged below the stirrer II. The level of overflow device I is higher than that of overflow device II 78. Through the setting of overflow arrangement's a high one low, increase the mobility of alumina powder, make the degritting effect better, the impurity is got rid of more thoroughly, practices thrift the cost, raises the efficiency.

A quick opening is formed above the feeding box 71; a feeding pipe is arranged above the sand removing box 72. Two feeding baffle plates are arranged at the feeding port of the sand removing box 72; the two sides of the bottom of the sand removing box 72 are respectively provided with a ventilation rectangular pipe 722.

The desanding method of the overflow desanding device 7 comprises the following steps in sequence:

The alumina circulation tube control system of this embodiment, the material of each link in the operation process is carried the safety and stability, it is effectual to remove sand edulcoration, the management and control is efficient, can be accurate regulation and control from the alumina that divides material controlling means to carry in the pipeline and from the mixed proportion of the alumina in the full-automatic hardened material remove device relief hole II in the pipeline, reach certain numerical value through making this mixed proportion, the dust removal reaction efficiency that just can make the mixed alumina in the dust remover is the highest, the reaction is abundant, dust removal purification effect is best, practice thrift a large amount of costs, satisfy the industrial demand.

The embodiment also provides an alumina circulating pipe control method, which adopts the pipe control system of the embodiment and sequentially comprises the following steps:

step two: the method comprises the following steps that (1) degritted alumina enters a material distribution box from an inlet of a material distribution control device, the alumina in the material distribution box is controlled to be distributed through a material distribution baffle plate I, then enters a metering box, then flows into a pipeline through a material guide hopper and a material distribution impact plate, and the alumina in the pipeline flows into a dust remover to be subjected to dust removal; step three: the dedusted alumina enters a full-automatic plate material removing device, clean alumina falls onto sand removing cloth at the bottom of the box body from a screen mesh of a drum screen through screening of the drum screen, a part of clean alumina flows into a discharge hopper I through an adjusting plate I to be discharged and flows into a material bin II through a material pipe, and the alumina in the material bin II is connected with an electrolytic cell through the material pipe; the rest part of clean alumina is subjected to material distribution control through a material distribution baffle II, flows into a material discharge hopper II, flows into a pipeline through a material pipe and is mixed with the degritted alumina; the screened slag impurities are discharged to a discharge hopper III from an outlet of the drum screen and then discharged from the discharge hopper III;

step five: the dedusted alumina enters the full-automatic plate material removing device again, clean alumina falls onto the sand removing and cloth pressing cloth at the bottom of the box body from a screen mesh of the rotary screen through the screening of the rotary screen, and a part of clean alumina flows into a discharge hopper I through an adjusting plate I to be discharged and flows into a material bin II through a material pipe; the rest part of clean alumina is subjected to material distribution control through a material distribution baffle II, flows into a material discharge hopper II, flows into a pipeline through a material pipe and is mixed with the degritted alumina; the screened slag impurities are discharged to a discharge hopper III from an outlet of the drum screen and then discharged from the discharge hopper III; and by analogy, the circulating management and control of the alumina are completed.

The alumina circulation pipe control method can effectively control and adjust the mixing ratio of the alumina after sand removal and the alumina after dust removal in the pipeline, so that the mixed alumina entering the dust remover has the advantages of highest reaction efficiency, full reaction, highest dust removal effect, cost saving, high control efficiency, good stability of material conveying, suitability for a large-flow system and industrial demand satisfaction.

It will be understood by those skilled in the art that the present invention includes any combination of the inventive aspects and embodiments of the present invention described above and illustrated in the accompanying drawings, which are not intended to be limited to the space and are not intended to describe the various aspects of the present invention in which such combinations are incorporated for the sake of brevity. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An alumina circulation pipe control system comprises a bin I, a bin II, a dust remover, a chimney, a material pipe and a pipeline; the device is characterized in that the device also comprises a distribution control device and a full-automatic hardened material removing device, the distribution control device is arranged on the material pipe between the bin I and the pipeline, the inlet of the full-automatic hardened material removing device is connected with the outlet of the dust remover, the discharging hopper II of the full-automatic hardened material removing device is connected with the pipeline through the material pipe, and the discharging hopper I of the full-automatic hardened material removing device is connected with the bin II through the material pipe.

2. The alumina circulation tube control system according to claim 1, wherein the material distribution control device comprises a material distribution box and a metering box, and the material distribution box is communicated with the metering box.

3. The alumina circulation tube control system according to claim 2, wherein a semicircular through hole I is formed at a position where the material distribution box is communicated with the metering box; the through hole I is movably connected with a semicircular material distribution baffle I matched with the through hole I.

4. The alumina circulation tube control system according to claim 3, wherein the material distribution baffle I is connected with a motor through a rotating shaft; and a wind shield is arranged above the rotating shaft.

5. The alumina circulation tube control system according to claim 4, wherein a material guide hopper is arranged below the rotating shaft, an arc-shaped material distribution punching plate is arranged below the material guide hopper, the material distribution punching plate is connected with the sensor, and a material distribution ridge is arranged below the material distribution punching plate.

6. The aluminum oxide circulation pipeline system according to claim 1, wherein the full-automatic plate material removing device comprises a sieve box and a drum sieve, the drum sieve is arranged in the sieve box, the drum sieve is connected with a motor, and an adjusting plate I and an adjusting plate II are arranged in the sieve box.

7. The alumina circulation tube control system according to claim 6, wherein the adjusting plate II is provided with a semicircular through hole II, and the through hole II is movably connected with a semicircular material distribution baffle II matched with the through hole II.

8. The alumina circulation pipework system according to claim 7, wherein the discharge hopper i is provided below the adjustment plate i, and the discharge hopper ii is provided below the adjustment plate ii.

9. The alumina circulation tube control system according to claim 8, wherein one end of the main shaft of the drum screen close to the feeding port of the screen box is provided with a helical blade I, the other end of the main shaft is sleeved with a rolling cage, the inner side wall of the rolling cage is provided with a sector plate and a helical blade II, and the tail end of the main shaft is provided with a vibrating hammer.